How to Grow Ruby Red Water Lily
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Ruby Red Water Lily
Nymphaea 'Ruby Red'
flowerRuby Red is a tropical day-blooming water lily cultivar prized for its deep crimson-red flowers and vigorous growth habit. The blooms are fragrant and can reach 6-8 inches in diameter, floating atop round green pads on an aquatic plant perfectly suited for ponds and water gardens. This variety is a hybrid selection bred specifically for color intensity and reliability in warm water environments.
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Example Ruby Red Water Lily timeline · Pittsburgh, PA (Zone 6b)
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Plant Ruby Red Water Lily
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Ruby Red Water Lily blooms
Around May 17≈ 30 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Ruby Red Water Lily dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 10-11; can be grown as a tropical annual in zones 8-9
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Dormancy & Establishment
2-3 weeksNewly planted rhizome sends up first leaves and roots establish in substrate
Plant in spring when water temperature reaches 70°F. Keep water level consistent. Apply aquatic fertilizer tablet near rhizome to encourage growth.
Vegetative Growth
4-6 weeksPlant develops multiple floating leaves and pads; green foliage expands across water surface
Maintain warm water temperature above 75°F. Remove any dead or decaying leaves. Apply monthly aquatic fertilizer. Thin out excess pads if they cover more than 50% of water surface.
Pre-Flowering
1-2 weeksLeaf production slows; flower buds begin forming underwater before rising to surface
Continue feeding with aquatic fertilizer. Ensure full sun exposure. Water should be at optimal warmth (78-85°F). Remove any algae competing for nutrients.
Flowering
June-September (or year-round in tropics)Deep red flowers emerge and float or hold just above water surface, opening in morning and closing by afternoon; flowers last 3-4 days
Remove spent flowers by snipping stem below water level to encourage more blooms. Continue biweekly fertilizer applications. Maintain consistent water level and temperature. Deadhead regularly for continuous flowering.
Late Season & Decline
October onwardFlowering slows as temperatures drop; plant begins to decline in northern regions if left outdoors
In zones 8-9, prepare to winter dormant rhizomes indoors (drain and store in damp sand at 50-60°F). In zones 10-11, may overwinter if water doesn't freeze. Gradually reduce fertilizer.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Remove affected leaves below waterline. Apply neem oil spray to leaf undersides above water. Introduce parasitic wasps for biological control. In severe cases, drain pond temporarily to disrupt life cycle.
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Spray with strong water jet to dislodge. Use insecticidal soap safe for aquatic plants. Introduce ladybugs or lacewings. Avoid broad-spectrum insecticides that harm fish and beneficial aquatic life.
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Maintain good water circulation and aeration. Remove decaying plant material promptly. Install fountain or aerator. Mosquito dunks (Bti) safe for fish ponds.
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Hand-remove larger snails. Introduce fish (koi, goldfish) that consume snails. Use copper-based products cautiously in shallow ponds. Reduce excess algae that snails feed on.
Uses
Ornamental pond crop
CulinaryWhile not typically eaten, water lily seeds and tubers have been used in some Asian cuisines. Ruby Red is primarily grown for ornamental value and aesthetic enjoyment in water gardens. [source]
Traditional wellness applications
MedicinalWater lilies have been used in traditional medicine systems, particularly in Ayurveda and Traditional Chinese Medicine, for calming and cooling properties. Modern research explores alkaloid compounds in Nymphaea species for potential therapeutic applications. [source]
Cut flower arrangements
HouseholdRuby Red blooms are stunning floating flowers for floral arrangements and water bowls. The large, fragrant blooms make elegant table centerpieces that last 3-4 days when kept in cool water. [source]
Garden art and landscape design
CraftRuby Red water lilies are prized by water garden enthusiasts and landscape designers for creating focal points in ponds, water features, and formal water gardens. The deep red color adds drama and beauty to aquatic installations. [source]
Pollinator and fish habitat
WildlifeWater lily flowers attract bees, butterflies, and other pollinators. The floating pads and root systems provide shelter, breeding grounds, and food sources for dragonflies, fish, and aquatic insects, supporting pond ecosystems. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Water lilies are ornamental cut flowers. Harvest blooms in early morning just as they open by cutting stems at a sharp angle 12-18 inches below the water surface. Place immediately in cool water. Blooms last 3-4 days in a vase when kept cool (65-70°F). Continue deadheading spent flowers on the plant to prolong blooming season throughout summer.
Fun Facts
- 🌱 Ruby Red is a tropical day-blooming lily, meaning its flowers open in the morning and close by afternoon—unlike night-blooming varieties like Victoria lilies that open at dusk.
- 🌱 Water lilies are rooted aquatic plants with a fascinating adaptation: their leaves have air pockets (aerenchyma) that allow them to float despite their weight, and their stems can extend many feet to reach the light above the water surface.
- 🌱 The ancient Egyptians revered water lilies (likely blue varieties) and associated them with rebirth and the sun god Ra due to their daily cycle of opening and closing; the plant appeared in tomb paintings and religious art.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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